Garment Inspection and stages - AVS

8/11/2019 Garment Inspection and stages - AVS

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armen

nspec on

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Stage

of

Garment

Inspection

A LRandomSam lin Ins ection

AQL1.5severeinspection

.

SampleSizeCodeLetter

,

DoubleSamplingPlan,normalinspection

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PreproductionCheck ina c ec ont erawmateria use ,sty e,cut

InitialProductionCheck ,

beforebulkproduction

DuringProduction

Check

FinalRandomInspectionCheckingthetotalproductionqualitybyselectingthe

.

beapplied

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TheAQLinspectiontakesthesamplesfromagoods,inspect

decideto

accept

or

reject

them.

ThestandardisbasedonMilitar Standard105D MILSTD

105D)

Itprovides

with

the

sampling

plans,

the

number

of

samples

to

beinspectedandtheacceptablequalitylevel(AQL)

AQL1.5isappliedtoverysevereinspectiononhighclass

expens ve

em.

AQL2.5isappliedwhentextilesofnormal/goodqualityare

.

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single,double

and

multiple

ac samp ngp ancan eper orme n ree

levelnorma ,t g tene an re uce , epen ngonqua ty

ofproducts

ngarment

n ustry,

s ng e

an

ou e

norma

samplingplansareapplied

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sizesto

different

code

letter.

,

inspection

and

three

for

special

inspection Forgarment nspect on,Genera Inspect on eve II

wouldbeused.

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SingleSamplingPlanfornormal

inspection

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DoubleSamplingPlans

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ExampleSingleSamplingPlanNormalInspection

. ,

findout

the

following

:

The

total

number

of

samples

need

to

inspectT eaccepta enum ero t esamp es

Therejectionnumberofthesamples

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Answer

SingleSampling

Plan

,

size

of

600

and

inspection

level

II

is

J

,

correspondstosamplesizesof80.

So,80samp esarenee e to nspectouto 600

AtAQL2.5%,ifdefectivegarmentsarelessthanor

equalto

5,

whole

lots

will

be

accepted,

if

it

is

foundtobe6ormore,wholelotswillberejected.

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, . ,

findout

theacceptable

number

and

rejection

number

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ExampleII

DoubleSampling

Plan

,

findout

from

double

sampling

plan

on

the

Thetotalsamplesizesneedtoinspect

Whatisthesecondacceptablenumber

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Answer

DoubleSampling

Plan

,

letterK

,

sizeofletterKis80.

F rst nspect on,atAQL4 ,t eaccepta e

numberis5,rejectionnumberis9

Ifany

number

between

5to

9,

second

inspection

isneeded

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Answer

Doublesampling

Plan

II

,

AtAQL

4%,

the

cumulated

acceptable

number

is

.

ConclusionIfthenumberofdefectivegarmentsfoundinthefirst

sample

is

6,

and

in

second

sample

is

5,

making

a

total

,

w

,

waccepted.

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Trythisone

DoubleSampling

Plan

,

produced.

AtAQL

2.5%,

find

out

the

following

at

Thetotalsamplesizesneedtoinspect

T eaccepta enum erat rst nspect on

Theacceptablenumberatsecondinspection

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Garment Inspection and stages - AVS

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